Norwegian media said he had set up a Twitter account a few days ago and posted a single message on July 17 saying: “One person with a belief is equal to the force of 100 000 who have only interests.”

His Twitter account had 545 followers.

Breivik was apparently dressed in a police uniform when he allegedly opened fire at a youth camp of Norway’s ruling political party on Friday, hours after a bomb killed seven in the government district in the capital Oslo.

Police said they believed that Breivik was linked to the Oslo bombing.

Norwegian television TV2 said the gunman detained by police was described as tall and blond and had links to right-wing extremism.

Breivik’s alleged profile lists him as single, Christian, and a director of a firm called “Breivik Geofarm”.
His profile said he attended the Oslo Handelsgymnasium.

He also says he is a fan of the games World of Warcraft and Modern Warfare 2.

With a music video playlist on his profile that included Dutch trance DJ Armin van Buuren and dance music vocalist Audrey Gallagher, Breivik appears to evade the stereotype of being influenced by metal music. - Staff reporters and Reuters